Just like adding keys to the split ring on your key chain, they tend to stay on for a very long time. If you intend to keep your gordy strap on your camera at all times, then there is no need for a quick disconnect kit.
If you want to switch between straps or have the option to attach a wrist strap and neck strap to your camera at the same time, then these will make it much easier.
You just attach a split ring and an o-ring to the camera's lugs and leave them there. The spring clip is then connected and left on the strap. Now you can attach and remove the camera strap easily.